Re: [Xen-devel] [PATCH] Check AMD SYSCFG DramModEn bit for MTRR configuration

[Keir Fraser <keir.xen@xxxxxxxxx>]

On 01/03/2011 21:11, "Wei Huang" <wei.huang2@xxxxxxx> wrote:

> This patch checks whether SYSCFG DramModEn bit is clear by BIOS. Some
> buggy BIOS might set this bit to 1, which causes unexpected behavior on
> AMD platforms. This patch also increase family check for AMD CPUs when
> setting fixed MTRR ranges.

How common are these buggy BIOSes? Can't we just get users to update their
BIOS?

 -- Keir

> Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
> 
> 
> PS: If OK, please apply it to both xen-4.1 and xen-4.0 trees.
> 
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